1. Fraunhofer IEE,Department Converters and Drive Technology,Kassel,Germany
2. Siemens AG,Technology,Erlangen,Germany
3. Karlsruhe Institute of Technology,Institute for Technical Physic,Karlsruhe,Germany
4. Leibniz University Hannover,Institute for Drive Systems and Power Electronics,Hannover,Germany
5. Bonn-Rhein-Sieg University of Applied Sciences,Institute of Technology, Resource and Energy-Efficient Engineering,Sankt Augustin,Germany